Transmission-tower.



No. 821,126. PATENTED MAY 22, 1906.

' D. R. SOHOLES. TRANSMISSION TOWER.

APPLICATION FILED PBB.21. 1906.

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1 5 E *1 l m 1 7'1? 5 F MM L 1/ L No. 821,126. PATENTED MAY 22, 1906,

" D. R'. SGHOLES.

TRANSMISSION TOWER.

AYPLIGA'PION FILEDIBRZI. 1906.

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UNITED STATES DANIEL R. soHoLEs,

PATENT orrioa.

OF CHICAGO, ILLINOIS, ASSIGNOR TO AERMOTOR COMPANY, OF CHICAGO, ILLINOIS, A CORPORATION OF ILLINOIS. TRANSMISSION-TOWER. I

Specification of Letters Patent.

Patented May 22, 1906:

Application filed February 21, 1906. Serial No. 802,226.

To ctZZ whom, it may concern.-

Be it known that I, DANIEL R. SoHoLES, a citizen of the United States, residing at Chicago, in the county of Cook and State of Illi nois, have invented new and useful Improvements in Transmission-Towers, of which the following is a full, clear, concise, and exact description, reference companying drawings, specification.

My invention rel skeleton towers or tural iron.

My tower is particularly designed for supporting electrical transmission wires, al though the same may be applied to various other purposes, if so desired.

One object of my invention is to provide a tower which is so constructed that the lat eral strain of the transmission-wires shall be brou ht upon the guy-wires of the tower rather t an upon the framework thereof, thereby preventing twisting and distortion of the tower.

Structural towers which have ordinarily been used for carrying transmission-wires have been so constructed that in event of any additional lateral strainas, for instance, the breaking of one of the wires or the falling across the wires of trees, &c.being brought upon the cross-arms carrying the wires the strain will tend to twist either the crossarms or the entire tower.

In accordance with my present invention I preferably connect the guy-wires of the tower to the outer ends of tne cross-arms, which are so constructed that they shall have enough flexibility to permit them when strain is brought upon the ends of the arms to give sufficiently to take up the slack of the guy-wire, whereby the strain is taken by the guy-wire instead of by the tower or crossarms, and twisting of these parts is prevented.

I have illustrated one form of my invention in the accompanying drawings, in which Figure .1 is a side elevation of the upper portion of my tower. Fig. 2 is an end elevation thereof. Fig. 3 is a plan view of one of the cross-arms of my tower, and Figs. 4 and 5" are detail views of portions of the crossarms.

In the preferred embodiment of my invention the top of my tower is constructed of being had to the acforming a part of this ates to improvements in built-up towers of strucfour converging posts 1, which are preferably formed of angle-iron. At suitable intervals on these posts diagonal braces 2 and crossbraces 3 are connected to the posts in such'a manner that the same shall be braced and the tower given great strength and rigidity. The converging upper ends of the post sof the tower are suitably clamped together about a vertical post 4, the lower end of which is secured in a support 5, mounted between the posts of the tower, and the upper end of which fits into a socket on a cast crossarm 6, provided also with sockets at its outer ends, in which are arranged to be secured insulator-pins 7 for carrying transmissionwires. 7 7

A second cross-arm is secured at a lower point on the tower and comprises a pair of parallel. angle-pieces 8, the outer ends of which'are connected by cross-pieces 9. These cross-arms have preferably formed at their outer ends integrally-formed angle-sockets 10, in which the ends of the angle-pieces forming the parallel members of the crossarms are arranged to be secured. Sockets are also formed in these connecting crosspieces, in which are fitted insulating-pins 11 for carrying the transmission-wires. Downwardly-extending angle-sockets 12, which are diagonally arranged, are also formed integrally with the cross-arms, and the'upper ends of diagonal braces 13 are arranged to be bolted or otherwise secured to these angle sockets. The lower ends of these diagonal braces 13 converge and are suitably bolted or otherwise secured to a horizontal brace 14 of the tower. Lugs 15, integrally formed with the cross-pieces, are provided with eyes 16, in which are arranged to be secured the ends of guy-wires 17, the lower ends of which are arranged to be anchored in the ground.

By the above construction of cross-arms sufficient lateral resiliency is given thereto whereby in event lateral strain is brought upon the transmission-wires the arms will give sufficiently to take up the slack of the guywires and the strain will be taken by the guywires instead of by the cross-arm of the tower, thus preventing all twisting and distorting of the tower.

In order to more fully illustrate the manner of o eration of my tower, it will be assumed that the strain upon the transmission wire occurs in the direction of the arrow. In

such an event the cross-arm will give sufliciently to permit the slack to'the guy-wire to be taken up, and the strain will be taken by the guy-wires.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is

l. A tower having a resilient cross-arm, the guy-wires of said tower being secured to said arm. 7

2. A skeleton tower having a resilient cross-arm, the guy-wires of said tower being secured to the ends of said arm.

3. The combination with a skeleton tower,

of a cross-arm therefor, comprising angle-- irons secured upon either side of the tower, means for connecting the ends of said angleirons together, and guy-wires for said tower connected at the outer ends of said arm, said arm being resilient to permit a lateral movement thereof, whereby the lateral strain upon the same will be taken up by said guy-wires.

a. The combination with a skeleton tower, of a cross-arm therefor, comprising angleirons secured upon each side of the tower, means for connecting the outer ends of said angle-irons together, wiresupporting pins carrying means at the outer ends of said cross-arm and guywires for said tower connected to the outer ends of said arm, said arm being resilient to permit a lateral movement thereof, whereby the lateral strain upon the arms will be taken up by said guy-wires.

5. The combination with a skeleton tower, of a cross-arm therefor, guy-wires secured to the outer ends of said cross-arm, and diagonal supports connected at one end to the outer end of said cross-arm, and at the other end to the tower, said cross-arrn being resilient to permit a lateral movement thereof.

6. The combination with a skeleton tower, of a cross-arm therefor, comprising angleirons arranged. upon each side of said tower, means for connecting the outer ends of said angle-irons, insulator-pins carried upon the outer ends of said cross-arm, and braces for said cross-arm comprising angle-irons con nected at their upper ends to said cross-arm and converging toward their lower ends and connected to said tower, and guy-wires connected at the outer ends of said crossarm, said arm being resilient to permit of a lateral movement thereof.

In witness whereof I have hereunto subscribed my name in the presence of two witnesses.

DANIEL R. SCHOLES. 

